SolarChat!

AndiesHandyHandies

Hi The bodge on the Prominence worked alright. I had to have another bodge at the Chromosphere. Changed the plug packing and with a light taping makes contact. The problem is really the poor quality of the Quark socket. The contacts are light and flimsy so they have to be adequately aligned and held...

AndiesHandyHandies

Hi Good news, so far, bodged up a solution which seems to work at rest on table. Cleaned the inside of the plug and socket with 3M Stabilant NN. Supposed to use quantim tunneling to improve current flow. Wrapped plug with clear sellotape. Two thicknesse on the bumpy flat side, one small bit, and the...

AndiesHandyHandies

Hi

Spoke too soon. Chromo not staying green. The Prom runs very hot round 60-65C.

Mmm

AndiesHandyHandies

Hi Mostly been using my Quark Prominence but its playing up in plug in mode. So I had the Promonence out where I have already had to tape on a right angled lead. I had a nice view of a good pair of proms. But there was some scatter off mica cleavage, or drop, damage in a sector. Was a bit surprised ...

AndiesHandyHandies

Hi

Had the Quark prom out as Chromo plug in playing up. Prom has taped on RA plug so worked.
Had a nice view of your first prom set.

Cheers. Andrew.

AndiesHandyHandies

Hi

X-Class flare, Cerro Tolero just.

20231231220142Ch V01 by Andrew Huskinson, on Flickr

Happy New Year to all.

Cheers Andrew.

AndiesHandyHandies

Hi

I use Black3 on 180 grit grey emery paper for small pop in springy self holding cylinders.

Cheers. Andrew.

AndiesHandyHandies

Hi Why not buy one of these? https://www.teleskop-express.de/shop/product_info.php/info/p15631_TS-Optics-60-mm-f-6-ED-Refractor---Finder-and-Guide-Scope---extendable-for-astrophotography.html I assume that will fit in your suitcase. Use the LUNT 50mm front etalon at the front, stops it down to 50mm ...

AndiesHandyHandies

Hi Frank Hourigan said there were 10 things limiting resolution and aperture was well down. I am lucky to be on a cliff edge and with an extended pier keeping the scope well off the nearby ground. When I was PST Mod 2ing my 180mm F10 Santel Rumak with bino-viewers I was getting good surface details ...

AndiesHandyHandies

Hi

Gong image.

20231128105322Th by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

Hi A nice still sunny autumn day. 90mm TS Triplet F6.7, VK 3X TE, (ES 2x TE), Quark Chromo, (PST Etalon) or Micro-focusser for baffling, 40mm Celestron Symetric. https://live.staticflickr.com/65535/53360876212_b88a8219bd_k.jpg P1070173 Portrait by Andrew Huskinson , on Flickr Because of high haze F4...

AndiesHandyHandies

Mark, I believe that at least a 100mm for the Ha line can be used for larger scale with the same success. Other than this, the works are great. Valery Hi If I can see essentially the same details as Mark imaged with a 50mm am I at the limit of resolution or contrast I can acheive with the 3x 90mm F...

AndiesHandyHandies

Hi

Nice images.

From a few miles north I had very similar views with the 90mmF6.7 at 3x and 6x.

Cheers, Andrew,

AndiesHandyHandies

Hi A sunny still autumn day. I had a little review of the baffling and made a few changes. 3x DS PST I had a pleasing session. On a par at least with yesterdays FD images. Good contrast on fibrils and as usual the proms. 6x DS PST Nice views of the bright flares round the spots. Looking forward to a...

AndiesHandyHandies

Hi What etalon setup is it? Is DS11 one front etalon? cheers. andrew. DSII (DS2) is a combination of Quark + LS40. I use it on all telescopes. The blocking filter is at the forefront of the Quark, then the LS40 follows. This combination gives the best results. Petr Have you checked the temperature ...

AndiesHandyHandies

Hi

What etalon setup is it? Is DS11 one front etalon?

cheers. andrew.

AndiesHandyHandies

My moved collimation lens is about 80mm infront of the PST body. Cant see any issue.

AndiesHandyHandies

Hi TS CF Triplet 90mm F6.6 APO Refractor https://stargazerslounge.com/topic/331990-ts-optics-photoline-90mm-f66/ This was my personal retirement present. You will only get the best possible image with a good triplet APO which has enough degrees of freedom to correct the first 5 Seidel abberations. A...

AndiesHandyHandies

I am glad you had the time to " try again " Andrew. I seem to have spent a lot of the summer working on my solar set ups. It seems my TS 90mm F6.7 Triplet is a very good telescope for solar observing. Maybe good at my location for my seeing. I took a long time to come to using the DS PST ...

AndiesHandyHandies

Hi I saw a vintage telescope today. Brass refractor on equatorial mount and a wooden tripod. Two dampers went from the bottom of the OTA spreading out to two lower legs of the tripod. Not top as I thought. The dampers had a smaller tube going up from the bottom with 'leafs' spread out at the top to ...

AndiesHandyHandies

Hi

Try, try and try again.

After my last observations with high haze I had a re-build of my pre-quark stack. Details later.

P1070144 Haze Killer PPV by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

Hi

Try, try and try again.

After my last observations with high haze I had a re-build of my pre-quark stack. Details later.

P1070144 Haze Killer PPV by Andrew Huskinson, on Flickr

Cheers. Andrew.

AndiesHandyHandies

marktownley wrote: ↑Tue Oct 24, 2023 7:04 pm I made a hargreaves strut for my 5" frac.

Was that as I thought from top of tube down to pier with friction damper?

Cheers. Andrew.

AndiesHandyHandies

Hi You have a long telescope on a small equatorial mount. 2 things which may help. One is to brace the top of space frame tube to the telescope pier with damping at the pier end. Add a Hargeaves strut. You have a rose joint at the top with a rod going to a friction damper at the bottom on the pier. ...

AndiesHandyHandies

Hi Here is Bobs diagrams. https://www.cloudynights.com/topic/659614-need-advice-on-using-baader-tz-2-telecentric-system/ For the PST and similar collimated solar set ups they only use singlet lenses so by using a positive and negative of the same FL balances out the abberations I suppose, and cheape...

AndiesHandyHandies

Hi Had a brief morning session. There were some nice proms. Just one prominent spot but a few filaments. Problem with the Quark Chromo was scatter from high level haze, contrail induced? DS with the PST was OK. Investigating there was scatter of the edges of the ERF filters it seemed. So a session b...

AndiesHandyHandies

Hi

The 'collimated' drawing is totally wrong. The first lens has to be concave and the same FL x -1 as the following convex lens to produce an image plane.

And the tele-centric on is meaningless.

Look at Bobs posts for a better picture.

Cheers. Andrew.

AndiesHandyHandies · Re: October 20 2023. Slooh Ha. Hi Hope the move goes well. Cheers. Andrew.

Hi

Hope the move goes well.

Cheers. Andrew.

AndiesHandyHandies

Hi

Glad to see it works in Telecentric mode.

My PST works OK a Double stack on a Quark with tele extenders.

Cheers. Andrew.

AndiesHandyHandies

Hi As Carbon60 said the first decent day for a while. Fortunately Solar had prior to my session posted some good images for today. 90mm F6.7 TS Triplet objective 2" Baader UV/IR Positioned so that the suns cone is entirely in the filter. Reflections 1/3 objective diameter. 2" TT Red CCD 1....

AndiesHandyHandies

Hi

I forgot the simple answer.

You can use other focal ratio (FNo) scopes, if it has a smaller FNo the aperture is reduced (Could reduce scatter off internal surfaces?), if its larger the image is smaller. Where the collimator is its FL in front of focus.

Cheers. Andrew.

AndiesHandyHandies

Hi

Are you then doing partial disk images? What is the aperture and focal length of the telescope being used?

Cheers. Andrew.

AndiesHandyHandies

Hi I took those from the PST Mod2 values. You need a lens of sufficient clear aperture to fully illuminate the etalon. And the negative dispersion lens needs to be placed its focal length in front of the telescopes focal plane. This then in your case provides a 40mm parallel beam throught the 40mm e...

AndiesHandyHandies

Hi

Are you using the 4.2x version?

What diameter is the illuminated cone at that point?

Cheers. Andrew.

AndiesHandyHandies

Hi

Why did you put the 14mm ring in?

At least the brightness went down a bit so theory seems right to some extent.

Cheers. Andrew.

AndiesHandyHandies

Hi The Hironde space telescope has a perforated 45Deg mirror to let the wanted light through and reflect the rest out of a side window. They have no ERF as such. I assume you are going to be doing partial sun high resolution imaging so you can do the same. And have a laser type heat dump outside of ...

AndiesHandyHandies

Hi You use a cylinder like Zeiss does to hold the secondary in and adjust its position at the end of each vane of the upper cylinder end. It extends below the secondary with an exit hole in front of the focuser. Getting a suitable elliptical secondary is not an un-surmountable challenge, A large thr...

AndiesHandyHandies

Shame its inverted only.

AndiesHandyHandies

Hi

Thats interesting that its consistent, so nothing to worry about it seems.

Mine is the cheap pistol one.

Thanks for your reply.

Cheers. Andrew.

AndiesHandyHandies

Hi Would it be possible to do the same exercise for the original Quark Blocker and graph them both as on CVs composite graph? My concern is that Daystars vague advice is not good enough to get the best out of the standard Quark. Perhaps the original being wider is better for casual viewers? Cheers. ...

AndiesHandyHandies

Hi If its never been on band you do not know how bright it can be! You need to cool it say to 5C with a freezer pack and as it rises in temp check the brightness of a stable feature. Put a bendy freezer pack over the blocking filter with a 25cm extension on the Quark Combo so the alloy round the blo...

AndiesHandyHandies

Hi Surely you reduce the heat load inside the focusser area greatly by using a clear optical glass for the secondary substrate with a dielectric h-alpha selection coating on the diagonal entrance face. Most of the off h-alpha energy will then pass straight through the optical glass sub-strate with a...

AndiesHandyHandies

Hi

Why do you need the dielectric secondary rather than an aluminium coated one?

Are you going to be using a mica or air spaced etalon?

This should only be in the Mods section?

Cheers. Andrew.

AndiesHandyHandies

Hi Did the vendor say what the nominal temperature the filter would be on band at? 20C ?? For 30C it would drift up by 10C x 0.042nm = 0.42 nm or 4.2A. The Aluxa here looks 4A wide at the top. Allowing for 2A drift to stay on band. http://astrosurf.com/viladrich/astro/instrument/solar/BF-profiles-mi...

AndiesHandyHandies

Hi

Your first image really shows the dark filaments on show.

I was observing at F40.

Cheers. Andrew.

AndiesHandyHandies

Hi there and wekcome to the forum! I;ve used all the scopes you've mentioned. Simply as the aperture increases then the resolution increases and so does the usable magnification. The first thing I would check is that the ITF filter and objective are not rusted, as if they are just changing this wil...

AndiesHandyHandies

Hi I saw the upward pointing prom and there was a fine curving over extension at the time. I can see the filaments in your image which looked like they were standing up for me. There was a good range from bright thin meandering flares to black curving filiments when I was viewing. I could see some g...

AndiesHandyHandies

Hi Tried this out a 3x VK TE, Quark Combo, bare PST etalon for full disk views at F20. Very nice image. Added a 2x ES TE. For the view at F40. And still good. I was looking for even extinction round the field. After a previous session ripping out 20mm baffles. Tried auto-collimation and things looke...

AndiesHandyHandies

Hi Tele-centric. On the F10 you would reach F30 with the TZ3 which might work. Putting a 2x Barlow before that for F60 should do. Worth trying first. On the F7 3x Barlow would get to F63. Collimated. You can get singlets from Edmund, Newport, ThorLabs and Opto-Sigma. In the UK Laser 2000 supply Opto...

AndiesHandyHandies

Hi On Jupiter my 180mm Santel Is just a tad under a 6" F15 Zeiss Coude solar refractor for contrast. And the design has a colour free flat field. I use 1.25" UV-IR and CCD red and Baader 7nm as internal erf stack and nothing melts. For a PST Mod2 I put the collimator lens first on that erf...

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